I must clean you must clean she must clean we must clean you must clean they must clean
Forma com V-ing
I must be cleaning you must be cleaning she must be cleaning we must be cleaning you must be cleaning they must be cleaning
Perfeito
I must have cleaned you must have cleaned she must have cleaned we must have cleaned you must have cleaned they must have cleaned
Perfeito com V-ing
I must have been cleaning you must have been cleaning she must have been cleaning we must have been cleaning you must have been cleaning they must have been cleaning
Negação
Forma simple
I must not clean you must not clean she must not clean we must not clean you must not clean they must not clean
Forma com V-ing
I must not be cleaning you must not be cleaning she must not be cleaning we must not be cleaning you must not be cleaning they must not be cleaning
Perfeito
I must not have cleaned you must not have cleaned she must not have cleaned we must not have cleaned you must not have cleaned they must not have cleaned
Perfeito com V-ing
I must not have been cleaning you must not have been cleaning she must not have been cleaning we must not have been cleaning you must not have been cleaning they must not have been cleaning
Forma interrogativa
Forma simple
must I clean? must you clean? must she clean? must we clean? must you clean? must they clean?
Forma com V-ing
must I be cleaning? must you be cleaning? must she be cleaning? must we be cleaning? must you be cleaning? must they be cleaning?
Perfeito
must I have cleaned? must you have cleaned? must she have cleaned? must we have cleaned? must you have cleaned? must they have cleaned?
Perfeito com V-ing
must I have been cleaning? must you have been cleaning? must she have been cleaning? must we have been cleaning? must you have been cleaning? must they have been cleaning?
Forma interro-Negação
Forma simple
must I not clean? must you not clean? must she not clean? must we not clean? must you not clean? must they not clean?
Forma com V-ing
must I not be cleaning? must you not be cleaning? must she not be cleaning? must we not be cleaning? must you not be cleaning? must they not be cleaning?
Perfeito
must I not have cleaned? must you not have cleaned? must she not have cleaned? must we not have cleaned? must you not have cleaned? must they not have cleaned?
Perfeito com V-ing
must I not have been cleaning? must you not have been cleaning? must she not have been cleaning? must we not have been cleaning? must you not have been cleaning? must they not have been cleaning?